I ran into the same issue -- I just upgraded my Battlemap Hide Helm (a blue) to an epic PVP Helm - Titanforged Leather Helm of Dominance. It was definitely an upgrade. In fact, if you click on the arrow next to my helm and check the listing at wowhead.com, the PVP helm is ranked 5 slots above the blue one.

I dropped from 1988 to 1976 because of this.

Looking further at the items, I basically gave up +crit for +hit, which is definitely preferred for raiding as a boomkin. Additionally, the PVP helm has a red socket for the potential for a lot more raw damage.

Have an issue regarding this myself.I'm a tank.Got the +30stam/+15 resil PvP shoulder enchant.Now, +18stam Heavy Borean Armor gets ya 5 points yet I get none for this enchant.Even disregarding the resil,+30 stam beats the heck out of +18 which is why I got it.Love this site though,so not griping.Just think this may have been overlooked.

As you can see on the screenshots your overall gear score is much lower with your old cloak, so that shouldn't be a problem. Are you sure that you didn't change any other item since you stated that your score is lower now.
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